US2708206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diammonium compounds
Assignee: Novartis AG
•
Filing: 1953-04-20
•
Granted: 1955-05-10
•
Expires: 1973-04-20
Abstract
No abstract record available.
Inventors
- 👤 Girod Emil
- 👤 Hafliger Franz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:20
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/06; C07D211/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A DIAMMONIUM COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
6 words
A DIAMMONIUM COMPOUND OF THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-09 | 1958-11-08 | 1959-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-09 | 1962-11-08 | 1963-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-09 | 1966-11-08 | 1967-05-10 | $7700.00 | Window Closed / Lapsed |